Marking device for watchmen&#39;s clocks.



ABRAHAM A. NEWMAN, OF CHICAGO, ILLI NOIS.

MARKING DEVICE FOR WATCHMENS CLOCKS.

Application led December Specification of Letters Patent.

Patented Feb. 11, 190s. 4,1906. seen No. 346.276.

To all whom it may concern:

Be it known that I, ABRAHAM A. NEWMAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Marking Devices for I7Vatchmens Clocks, of which the following is a specification. i

My invention relates to improvements in portable watchmens clocks, and is fully described and explained in this specification and shown in the accompanying drawings, in which Figure l is a side elevation of my improved device, with a portion of the casebroken away to show the interior construction; Fig. 2 is a top plan, a portion of the device being shown in the section indicated by the line 2 2 of Fig. l, and Fig. 3 is a bottom plan, a portion of the view being shown in the section indicated by the line 3 3 of Fig. 2, and Fig. 4 is a perspective view of one of the keys used in connection with my improved device.

Referring to the drawings, A is a suitable dial adapted to be rotated by a clock mechanism contained within the case. The particular form of clock mechanism is iinmaterial as far as my present invention is concerned, and I have therefore not illustrated the same, various forms of clock mechanism for the same purpose being in common use in watchmens clocks. Beneath the dial A is supported a bracket B in which is rotatively mounted a cylinder C, containing preferably three lines of characters as illustrated. These characters are preferably female characters engraved or otherwise cut into the surface of the cylinder C. The cylinder is provided at one end with a plate D, the lower end of which is squared, and a spring E on the bracket B normally holds the cylinder in such position that the central line of characters is uppermost. rIhe plate D carries at its upper end a roller d, which is adapted to be engaged by a bit carried by the keys F, said keys having each a single character adapted to register with one of the characters on the cylinder to produce an embossed character upon the dial.

The keys F are preferably made of the form illustrated in the drawings, although other forms of keys may be adapted if desired and are inserted through the opening in the case into that part of the case on the opposite 1 side of the dial from the cylinder C.

l In practice I use three forms of keys, one l having the characters corresponding to the l central line of characters on the cylinder and r having no bits f. Wvhen these keys are used l the cylinder remains stationary and the charl acters on the keys merely register with the l central series of characters on the cylinder C. l One set of keys is provided with the curved l bits f. Ihen these keys are used the bit f contacts with the roller d on the plate D by the cylinder and rotates the same downward as viewed in Fig. l, bringing the upper series of characters on the cylinder into registration with the character on the key. By modifying the cam surface of the bit, the cylinder is made to rotate in the opposite direction to bring the third series of characters into registration with the characters on the keys.

By the mechanism above illustrated and described I am enabled to secure a large number of characters in a clock of comparatively small size, thus making it possible to utilize a single clock on a very large watchmans beat.

I realize that considerable variation is possible in the details of the construction herein illustrated, and I therefore do not intend to limit myself to the specific form shown herein and described, except as pointed out in the following claims.

Vhat I claim as new and desire to secure by Letters Patent, is-

l. The combination with a cylinder having a plurality of series of characters, of a key having a character adapted to coperate with one of the characters on the cylinder, a cam upon the key and means carried by the cylinder and adapted to engage with the cam on the key as the key is turned whereby the cylinder is rotated to secure proper engagey ment between the key and cylinder.

l 2. rThe combination with a cylinder carryl ing a plurality of characters arranged in difl ferent series, of a projection carried by the cylinder, a key having a character adapted l to register with one of the characters of the cylinder and a cam carried by the key and adapted to engage the projection to rotate l the cylinder as the key is turned.

3. The combination with a cylinder having dierent series of characters thereon, of a plate carried by the cylinder7 a spring engaging the plate to hold the cylinder normally in 5 one position7 a projection on said plate, and a key having a cam adapted to engage the projection as the key is turned to rotate the same against the force of the spring to bring the proper series of characters into operative position.

ABRAHAM A. NEVMAN. Witnesses:

C. W. WAsHBURN, J. H. LANDES. 

